Two-point-controller - how it works
Two-point controllers or binary controllers are used for slow control systems. Here, the actual value changes only slowly. Examples for this: temperature control, level control, compressed air control, etc.
The following video clip illustrates the function of a two-point controller at the example of a compressed air control.
The switching and control behavior of a 2-point controller is further clarified by the static y(x) characteristic curve. By the way, this results in the symbol of this controller.
Since the time axis t is the common axis, both diagrams y(t) and x(t) can be combined to form the static y(x) characteristic diagram.